PHL - IDA

$170 Find Cheap Flights from Philadelphia to Idaho Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Idaho Falls departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$374
Typical prices: $515-$379
Delta
Sat 5/16Mon 5/25
PHL - IDA • 1 stop
Cheapest one-way
$170
Multiple Airlines
Sat 7/4
PHL - IDA • 2 stops
Top airlines
Cheapest • from $374 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Philadelphia and Idaho Falls. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $398 (round-trip)
Shortest trip • 6h 46m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Idaho Falls!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Idaho Falls (PHL-IDA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Idaho Falls

Sat, May 16 - Mon, May 25
Delta Logo
7:25 am - 2:34 pm
PHL
-
IDA
9h 09m
1 stop
Delta Logo
6:54 pm - 6:10 am
IDA
-
PHL
9h 16m
1 stop
$374Delta
Sat, May 16 - Sun, May 24
Delta Logo
7:25 am - 2:34 pm
PHL
-
IDA
9h 09m
1 stop
Delta Logo
6:54 pm - 9:27 am
IDA
-
PHL
12h 33m
2 stops
$379Delta
Mon, May 4 - Fri, May 8
Alaska Airlines Logo
6:58 pm - 3:29 pm
PHL
-
IDA
22h 31m
1 stop
Alaska Airlines Logo
4:06 pm - 6:02 am
IDA
-
PHL
11h 56m
1 stop
$399Alaska Airlines
Fri, May 1 - Tue, May 5
American Airlines Logo
3:58 pm - 11:39 pm
PHL
-
IDA
9h 41m
1 stop
American Airlines Logo
7:48 am - 8:34 pm
IDA
-
PHL
10h 46m
2 stops
$404American Airlines
Fri, May 1 - Tue, May 5
American Airlines Logo
1:47 pm - 11:39 pm
PHL
-
IDA
11h 52m
2 stops
American Airlines Logo
7:48 am - 11:42 pm
IDA
-
PHL
13h 54m
2 stops
$409American Airlines
Wed, Jul 1 - Wed, Jul 8
American Airlines Logo
7:36 am - 1:40 pm
PHL
-
IDA
8h 04m
1 stop
American Airlines Logo
1:54 pm - 12:35 am
IDA
-
PHL
8h 41m
1 stop
$410American Airlines
Wed, Sep 9 - Wed, Sep 23
American Airlines Logo
6:00 am - 12:12 pm
PHL
-
IDA
8h 12m
1 stop
American Airlines Logo
12:12 pm - 12:09 am
IDA
-
PHL
9h 57m
2 stops
$415American Airlines
Wed, Aug 19 - Tue, Aug 25
American Airlines Logo
5:00 am - 11:30 am
PHL
-
IDA
8h 30m
1 stop
American Airlines Logo
12:46 pm - 10:22 pm
IDA
-
PHL
7h 36m
1 stop
$420American Airlines
Wed, Aug 19 - Tue, Aug 25
American Airlines Logo
5:00 am - 11:30 am
PHL
-
IDA
8h 30m
1 stop
American Airlines Logo
12:10 pm - 11:40 pm
IDA
-
PHL
9h 30m
2 stops
$425American Airlines
Wed, Aug 19 - Tue, Aug 25
American Airlines Logo
12:04 pm - 9:20 pm
PHL
-
IDA
11h 16m
2 stops
American Airlines Logo
12:10 pm - 11:40 pm
IDA
-
PHL
9h 30m
2 stops
$430American Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Idaho Falls flights

Get data-powered insights and trends into flights from Philadelphia to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Philadelphia to Idaho Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Idaho Falls departing in August.

What is the cheapest month to fly from Philadelphia to Idaho Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Idaho Falls is May, where tickets cost $379 (return) on average. On the other hand, the most expensive months are October and June, where the average cost of round-trip tickets is $665 and $660 respectively.

Good to know

Low seasonJanuary
Cheapest flight$170
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Philadelphia to Idaho Falls

When to book flights from Philadelphia to Idaho Falls

Are your dates flexible? Find out the best times to travel from Philadelphia to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Idaho Falls

  • What is the cheapest flight from Philadelphia to Idaho Falls?

    In the last 3 days, the lowest price for a flight from Philadelphia to Idaho Falls was $170 for a one-way ticket and $374 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Idaho Falls?

    A passport is not required to fly from Philadelphia to Idaho Falls.

  • Which aircraft models fly most regularly from Philadelphia to Idaho Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Idaho Falls?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Philadelphia and Idaho Falls, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Philadelphia to Idaho Falls, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Idaho Falls are Delta and United Airlines. With an average price for the route of $508 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $618 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Philadelphia to Idaho Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Idaho Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Idaho Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Idaho Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and IDA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Idaho Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Philadelphia to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8422 reviews
7.2Food
7.9Comfort
8.1Boarding
7.8Entertainment
8.5Crew
Airline reviews

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

10.0 ExcellentDavid, Apr 2026
DTW - SFO
Read more Delta reviews

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Short trip, no food and therefore no expectation for much interaction with staff who were pleasant and professional. My critique is on comfort of the seats. Exit rows and comfort seats do not provide enough personal space for 3 side-by-side seats, especially when in the middle row. Some passengers are not considerate of the middle seat and there should be signs that state something to the effect of: "please consider giving middle seats use of the armrests."

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

Transparency from pilots, quick boarding and exiting the plane, staff greeted to each and everyone,

Didn't like sitting on the waiting pad for 30 minutes right after departing the gate. If you're going to do that, just don't board so people can still get up and walk around in the terminal. My luggage was damaged by the baggage handlers.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Everything you need to know for your flight from Philadelphia to Idaho Falls

Information on your arrival and departure airports